Nine of the 17 close contacts of a 15-year-old Tasmanian boy with the Delta strain of COVID-19 have returned negative test results.
Acting Premier Jeremy Rockliff on Tuesday said the boy remained clinically well at a COVID case management facility in Hobart with his father.
Mr Rockliff said his father had not yet tested positive for COVID-19.
He said 17 primary close contacts of the boy were in quarantine and nine have returned negative results.
Mr Rockliff said 35 casual contacts of the boy had all returned negative results.
He was there for a few minutes, but an exposure window has been declared by Public Health of between 2.20pm and 2.45pm.
Mr Rockliff said Tasmanians had undertaken 510 tests on Saturday, 499 tests on Sunday, 740 tests on Monday.
He said 12 wastewater testing sites have been added to a testing regime in Launceston over the next two weeks.
Public Health director Mark Veitch said laboratory results had confirmed the boy had contracted the Delta strain of COVID-19.
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